51 Sb Antimony 121.760 | 2 8 18 18 5
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51 Sb Antimony 121.760 | 2 8 18 18 5
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| General |
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| Name | Antimony | | Symbol | Sb | | Number | 51 | | Chemical series | Metalloids | | Group / Period | 15 / 5 | | Block | p-block | | CAS registry number | 7440-36-0 |
| Physical properties |
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| State | solid | | Density | 6.697 g/cm3 | | Melting point | 903.78 K (630.63°C, 1167.13°F) | | Boiling point | 1860 K (1587 °C, 2889 °F) | | Critical point | |
| Atomic properties |
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| Atomic Weight | 121.760 g/mol | | Crystal structure | rhombohedral | | Electronegativity | 2.05 | | Atomic radius | 145 pm | | Atomic radius (calculated) | 133 pm | | Electron configuration | [Kr] 4d10 5s2 5p3 | | Electrons per shell | 2, 8, 18, 18, 5 | | Number of protons | 51 | | Number of neutrons | 71 |
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